Crockets again, must be arranged further apart, and pinnacles must be more lofty when situated at the top of a building or tower, than they would be if the same pinnacle were intended to be near the eye. The same rule holds good with regard to capitals, canopies, and other features that are liable to lose their apparent height by foreshortening.

– James Kellaway Colling: ‘Gothic ornaments, being a series of examples of enriched details and accessories of the architecture of Great Britain. Drawn from existing authorities’, 1850